fec: Handle the regulator in suspend/resume

In order to save power, let's disable the regulator in the suspend function and
enable it in resume.

Tested on a mx28evk board.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index cac667db61be..866b92220c15 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -2044,6 +2044,9 @@ fec_suspend(struct device *dev)
         clk_disable_unprepare(fep->clk_ahb);
         clk_disable_unprepare(fep->clk_ipg);
 
+        if (fep->reg_phy)
+                regulator_disable(fep->reg_phy);
+
         return 0;
 }
 
@@ -2052,6 +2055,13 @@ fec_resume(struct device *dev)
 {
         struct net_device *ndev = dev_get_drvdata(dev);
         struct fec_enet_private *fep = netdev_priv(ndev);
+        int ret;
+
+        if (fep->reg_phy) {
+                ret = regulator_enable(fep->reg_phy);
+                if (ret)
+                        return ret;
+        }
 
         clk_prepare_enable(fep->clk_enet_out);
         clk_prepare_enable(fep->clk_ahb);